Smith officially listed as questionable; 10 others probable

Passing an upcoming impact test is all that separates Alex Smith from playing in the 49ers’ Monday night game against the Chicago Bears, eight days after he sustained his first concussion this season. Smith officially is listed as questionable.

Bears quarterback Jay Cutler has been ruled out because of a concussion, and he’ll be replaced by former Raiders quarterback Jason Campbell.

On Saturday, Smith practiced for a fourth consecutive day in a black jersey, which signifies a no-contact role that is customary anyhow at practices involving quarterbacks.